EP1424420A1 - Structured deflector for laying filaments - Google Patents

Structured deflector for laying filaments Download PDF

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Publication number
EP1424420A1
EP1424420A1 EP02026430A EP02026430A EP1424420A1 EP 1424420 A1 EP1424420 A1 EP 1424420A1 EP 02026430 A EP02026430 A EP 02026430A EP 02026430 A EP02026430 A EP 02026430A EP 1424420 A1 EP1424420 A1 EP 1424420A1
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EP
European Patent Office
Prior art keywords
structured
baffles
shaped
filaments
structures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02026430A
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German (de)
French (fr)
Inventor
Uwe Bornmann
Heinz Schörgenhuber
Franz Hintermüller
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Polyfelt GmbH
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Polyfelt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polyfelt GmbH filed Critical Polyfelt GmbH
Priority to EP02026430A priority Critical patent/EP1424420A1/en
Publication of EP1424420A1 publication Critical patent/EP1424420A1/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments

Definitions

  • the invention relates to structured guide plates for depositing filaments in a process for the production of geotextiles.
  • Baffles are known to be used to store melt-spun filaments for the production of a non-woven fleece used. If necessary, these are filed on a pad Filaments then by needling, for example by Water jet needling solidified.
  • AT 399 169 B describes a method for controlling the anisotropy of the Nonwoven properties in the longitudinal and transverse directions are known, in which the Vibration frequency of the guide or baffle plates when the threads are deposited in Depending on the desired ratio of anisotropy is varied.
  • the object of the invention was to provide baffles or baffles their structuring allows defined variations in the filing structure.
  • the invention therefore relates to structured baffles, characterized by the fact that they are formed by groove-shaped, wavy, waffle-shaped, segment-shaped, diamond-shaped structures in longitudinal and / or transverse direction are structured.
  • defined storage structures can be created be achieved, the final properties of a subsequent solidified geotextile.
  • the influence in the baffle realized the two-dimensional fanning out of the structures Filament bundle.
  • the correspondingly structured guide plates preferably have longitudinal or Cross grooves on, in the surface of the baffles or baffles in one defined vertical or vertical spacing recesses are 1-20 mm below the thickest point of the baffle or baffle.
  • the depth of the recesses also influences the filing structure of the Filaments. The deeper the recesses, the greater the maximum thickness of the Baffles in relation to the depth of the recesses.
  • the structured baffles advantageously have a longitudinal or Transverse structures in the form of a segment of a circle or wavy Structures on.
  • isotropy i.e. the ratio of Longitudinal strength is influenced by transverse strength
  • the fleece deposited in the manner according to the invention can then be opened are solidified in the usual way, using both known needling methods as well as hydroentangling processes can be used.
  • a method for solidification is used particularly advantageously be, in which the filaments in a manner according to the invention on a Sieve belt are deposited, which then the deposited filaments at least in transported the first consolidation stage
  • melt-spun filaments are therefore initially open deposited and on the endless screen belt according to the invention transported to the first consolidation stage.
  • the filed Filaments are passed through on the sieve belt during transport Suction zones fixed, so that no disturbances during transport of the unconsolidated Filaments can occur.
  • the water jets act depending on the arrangement serves the solidification device through the sieve belt and / or the sieve belt as a base.
  • the geotextile After hardening in the first hardening stage, the geotextile is sufficiently hardened so that it can be guided without disturbing the structure, even without the support of a conveyor belt. If necessary, the sieve belt can also be passed through any further consolidation stages.
  • the geotextiles produced in this way are characterized by large Homogeneity and uniformity and its defined mechanical Properties in the longitudinal and transverse directions.
  • the geotextiles produced according to the invention can therefore in particular for fastening, as a substructure or drainage installation in streets, paths, Bridges, airport runways, embankments, dams and the like are used become.
  • 1 a and 1 b show guide plates with modified wave structures, 1 c with transversely oriented fine wave structure, 1 d with transversely oriented corrugated structure, 1e with wave structure, 1 f shark skin structure, 1 g with scale structure, 1 h with two-dimensional corrugated structure, 1 i with longitudinal stripe structure and 1 j with cross-oriented semicircular structure.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The sheet metal baffle is structured longitudinally and/or transversely by grooves, waves, honeycomb, circular segments or diamond-shapes. An Independent claim is included for the corresponding method.

Description

Die Erfindung betrifft strukturierte Leitbleche zur Ablage von Filamenten in einem Verfahren zur Herstellung von Geotextilien.The invention relates to structured guide plates for depositing filaments in a process for the production of geotextiles.

Leit- oder Prallbleche werden bekannterweise zur Ablage von schmelzgesponnenen Filamente zur Herstellung eines nicht gewebten Vlieses verwendet. Gegebenenfalls werden diese auf einer Unterlage abgelegten Filamente anschließend durch Vernadelungsverfahren, beispielsweise durch Wasserstrahlvernadelung verfestigt.Baffles are known to be used to store melt-spun filaments for the production of a non-woven fleece used. If necessary, these are filed on a pad Filaments then by needling, for example by Water jet needling solidified.

Gemäß der DE 23 0 331 wird ein weitgehendes isotropes Verhalten der Eigenschaftswerte in Längs- und Querrichtung, beispielsweise durch die Verwendung eines schwingenden Leit- oder Prallblechs bei der Ablage der Fäden auf das Transportband erreicht.According to DE 23 0 331 a largely isotropic behavior of the Property values in the longitudinal and transverse directions, for example by the Use of a vibrating baffle or baffle when storing the Threads reached on the conveyor belt.

In der AT 399 169 B ist ein Verfahren zur Steuerung der Anisotropie der Vlieseigenschaften in Längs- und Querrichtung bekannt, bei dem die Schwingungsfrequenz der Leit- oder Prallbleche bei der Ablage der Fäden in Abhängigkeit von gewünschten Verhältnis der Anisotropie variiert wird.AT 399 169 B describes a method for controlling the anisotropy of the Nonwoven properties in the longitudinal and transverse directions are known, in which the Vibration frequency of the guide or baffle plates when the threads are deposited in Depending on the desired ratio of anisotropy is varied.

Üblicherweise werden in all diesen Verfahren glatte Leitbleche verwendet, die in definierte Schwingung versetzt werden können um eine bestimmte Ablagestruktur zu erreichen.Usually, smooth baffles are used in all of these processes defined vibration can be offset by a certain one Achieve filing structure.

Aufgabe der Erfindung war es Leit- oder Prallplatten bereitzustellen, die durch ihre Strukturierung definierte Variationen in der Ablagestruktur erlauben.The object of the invention was to provide baffles or baffles their structuring allows defined variations in the filing structure.

Gegenstand der Erfindung sind daher strukturierte Leit- oder Prallbleche, dadurch gekennzeichnet, dass sie durch rillenförmige, wellenförmige, waffelförmige, kreissegmentförmige, rautenförmige Strukturen in Längs- und/oder Querrichtung strukturiert sind. The invention therefore relates to structured baffles, characterized by the fact that they are formed by groove-shaped, wavy, waffle-shaped, segment-shaped, diamond-shaped structures in longitudinal and / or transverse direction are structured.

Durch die Strukturierung der Leitbleche können definierte Ablagestrukturen erzielt werden, die die endgültigen Eigenschaften eines anschließend verfestigten Geotextils beeinflussen. Dabei beeinflussen die im Leitblech realisierten Strukturen die zweidimensionalen Auffächerung des Filamentbündels.By structuring the guide plates, defined storage structures can be created be achieved, the final properties of a subsequent solidified geotextile. The influence in the baffle realized the two-dimensional fanning out of the structures Filament bundle.

Vorzugsweise weisen die entsprechend strukturierten Leitbleche Längs- oder Querrillen auf, wobei in die Oberfläche der Leit- oder Prallbleche in einem definierten senkrechten oder vertikalen Abstand Ausnehmungen eingebracht sind, die 1-20 mm unter der dicksten Stelle des Leit- oder Prallblechs liegen. Die Tiefe der Ausnehmungen beeinflusst zusätzlich die Ablagestruktur der Filamente. Je tiefer die Ausnehmungen, desto größer die maximale Stärke der Leitbleche im Verhältnis zur Tiefe der Ausnehmungen.The correspondingly structured guide plates preferably have longitudinal or Cross grooves on, in the surface of the baffles or baffles in one defined vertical or vertical spacing recesses are 1-20 mm below the thickest point of the baffle or baffle. The depth of the recesses also influences the filing structure of the Filaments. The deeper the recesses, the greater the maximum thickness of the Baffles in relation to the depth of the recesses.

Vorteilhaferweise weisen die strukturierten Leitbleche in Längs- oder Querrichtung Strukturen in Form eines Kreissegments bzw. wellenförmige Strukturen auf.The structured baffles advantageously have a longitudinal or Transverse structures in the form of a segment of a circle or wavy Structures on.

Darüberhinaus sind auch andere Strukturierungen denkbar, beispielsweise waffelförmig oder rautenförmig,.Other structures are also conceivable, for example waffle-shaped or diamond-shaped ,.

Während durch linienförmige Strukturen die Isotropie, also das Verhältnis von Längsfestigkeit zu Querfestigkeit beeinflusst wird, kann bei komplexeren Strukturen die Gleichmäßigkeit (Variation im Flächengewicht) verbessert werden (siehe Beispiele).While the isotropy, i.e. the ratio of Longitudinal strength is influenced by transverse strength, can be more complex Structures that improve uniformity (variation in basis weight) (see examples).

Anschließend kann das auf die erfindungsgemäße Weise abgelegte Vlies auf übliche Weise verfestigt werden, wobei sowohl bekannte Nadelungsverfahren als auch Wasserstrahlverfestigungsverfahren eingesetzt werden können. The fleece deposited in the manner according to the invention can then be opened are solidified in the usual way, using both known needling methods as well as hydroentangling processes can be used.

Besonders vorteilhaft wird dabei ein Verfahren zur Verfestigung angewendet werden, bei dem die Filamente auf erfindungsgemäße Weise auf einem Siebband abgelegt werden, das dann die abgelegten Filamente zumindest in die erste Verfestigungsstufe transportiertA method for solidification is used particularly advantageously be, in which the filaments in a manner according to the invention on a Sieve belt are deposited, which then the deposited filaments at least in transported the first consolidation stage

Die schmelzgesponnenen Filamente werden also vorerst auf erfindungsgemäße Weise auf dem endlosen Siebband abgelegt und auf diesem Siebband zur ersten Verfestigungsstufe transportiert. Die abgelegten Filamente werden dabei während des Transports auf dem Siebband durch Saugzonen fixiert, sodass keine Störungen beim Transport der unverfestigten Filamente auftreten können.The melt-spun filaments are therefore initially open deposited and on the endless screen belt according to the invention transported to the first consolidation stage. The filed Filaments are passed through on the sieve belt during transport Suction zones fixed, so that no disturbances during transport of the unconsolidated Filaments can occur.

In der ersten Verfestigungsstufe wirken die Wasserstrahlen je nach Anordnung der Verfestigungseinrichtung durch das Siebband und/oder das Siebband dient als Unterlage.In the first consolidation stage, the water jets act depending on the arrangement serves the solidification device through the sieve belt and / or the sieve belt as a base.

Nach der Verfestigung in der ersten Verfestigungsstufe ist das Geotextil ausreichend verfestigt, sodass es ohne Störungen der Struktur auch ohne Unterstützung eines Transportbandes geführt werden kann.
Gegebenenfalls kann das Siebband aber auch durch etwaige weitere Verfestigungsstufen geführt werden.After hardening in the first hardening stage, the geotextile is sufficiently hardened so that it can be guided without disturbing the structure, even without the support of a conveyor belt.
If necessary, the sieve belt can also be passed through any further consolidation stages.

Auf dem Siebband findet also sowohl die Vliesbildung als auch die Verfestigung statt.Both the fleece formation and the consolidation take place on the sieve belt instead of.

Durch dieses Verfahren ist es mögliche jede Störung in der Struktur des noch unverfestigten Geotextils nach der Ablage zu vermeiden.
Es können daher aufwendige Verfahrensführungen wie beispielsweise eine wechselseitige Führung vermieden werden. With this method it is possible to avoid any disturbance in the structure of the still unconsolidated geotextile after it has been deposited.
Complex procedures, such as mutual guidance, can therefore be avoided.

Die auf diese Weise hergestellten Geotextilien zeichnen sich durch große Homogenität und Gleichmäßigkeit und seine definierten mechanischen Eigenschaften in Längs- und Querrichtung aus.The geotextiles produced in this way are characterized by large Homogeneity and uniformity and its defined mechanical Properties in the longitudinal and transverse directions.

Die erfindungsgemäß hergestellten Geotextilien können daher insbesondere zur Befestigung, als Unterbau oder Drainageeinbauten in Straßen, Wegen, Brücken, Flughafenpisten, Böschungen, Dämmen und dergleichen verwendet werden.The geotextiles produced according to the invention can therefore in particular for fastening, as a substructure or drainage installation in streets, paths, Bridges, airport runways, embankments, dams and the like are used become.

In Fig 1 sind verschiedene Ausführungen von strukturierten Leitblechen dargestellt.1 shows different designs of structured guide plates shown.

Fig 1 a und 1 b zeigen Leitbleche mit modifizierten Wellenstrukuren, 1 c mit querorientierter feiner Wellenstruktur, 1 d mit querorientierter Riffelstruktur, 1e mit Wellenstruktur, 1 f Haifischhautstruktur, 1 g mit Schuppenstruktur, 1 h mit zweidimensionaler Riffelstruktur, 1 i mit längsorientierter Streifenstruktur und 1 j mit querorientierter Halbrundstruktur. 1 a and 1 b show guide plates with modified wave structures, 1 c with transversely oriented fine wave structure, 1 d with transversely oriented corrugated structure, 1e with wave structure, 1 f shark skin structure, 1 g with scale structure, 1 h with two-dimensional corrugated structure, 1 i with longitudinal stripe structure and 1 j with cross-oriented semicircular structure.

Beispiel 1:Example 1:

Spinnvlies aus PP mit herkömmlichen glatten Leitblechen:

  • Flächengewicht ca. 150 g/m2
  • Variation des Flächengewichtes 7,3%
  • Isotropie der Zugfestigkeit 1,3:1
  • Beispiel 2:
    • Spunbond made of PP with conventional smooth baffles:
  • Basis weight approx. 150 g / m 2
  • Variation of the basis weight 7.3%
  • Isotropy of tensile strength 1.3: 1
  • Example 2:

    • Spinnvlies aus PP mit strukturierten Leitblechen (vertikale Rillenstruktur):

  • Flächengewicht ca. 150 g/m2
  • Variation des Flächengewichtes 7,5%
  • Isotropie der Zugfestigkeit 1,1:1
    • Spunbonded nonwoven made of PP with structured guide plates (vertical groove structure):
  • Basis weight approx. 150 g / m 2
  • Variation of the basis weight 7.5%
  • Isotropy of tensile strength 1.1: 1

    • Beispiel 3:Example 3:

    Spinnvlies aus PP mit strukturierten Leitblechen (horizontale Rillenstruktur):

  • Flächengewicht ca. 150 g/m2
  • Variation des Flächengewichtes 7,1 %
  • Isotropie der Zugfestigkeit 1,5:1
    • Spunbonded nonwoven made of PP with structured guide plates (horizontal groove structure):
  • Basis weight approx. 150 g / m 2
  • Variation of the basis weight 7.1%
  • Isotropy of tensile strength 1.5: 1

    • Beispiel 4:Example 4:

    Spinnvlies aus PP mit strukturierten Leitblechen (Fig. 1 j):

  • Flächengewicht ca. 150 g/m2
  • Variation des Flächengewichtes 5,1 %
  • Isotropie der Zugfestigkeit 1,3:1
    • Spunbonded nonwoven made of PP with structured guide plates (Fig. 1 j):
  • Basis weight approx. 150 g / m 2
  • Variation of the basis weight 5.1%
  • Isotropy of tensile strength 1.3: 1

    • Claims (4)

    Strukturierte Leit- oder Prallbleche, dadurch gekennzeichnet, dass sie durch rillenförmige, wellenförmige, waffelförmige, kreissegmentförmige, rautenförmige Strukturen in Längs- und/oder Querrichtung strukturiert sind.Structured baffles or baffles, characterized in that they are structured in the longitudinal and / or transverse direction by groove-shaped, wave-shaped, waffle-shaped, segment-shaped, diamond-shaped structures. Verfahren zur Herstellung definierter Ablagestrukturen von Filamenten, dadurch gekennzeichnet, dass die Filamente gegebenenfalls nach Aufspreizen durch einen Separator auf strukturierte Leit- oder Prallbleche auftreffen und entsprechend der Struktur dieser Leit- oder Prallbleche definiert abgelegt werden.Process for the production of defined filing structures, characterized in that the filaments, if necessary after striking by a separator, strike structured baffles or baffles and are deposited in a defined manner according to the structure of these baffles or baffles. Verfahren zur Herstellung von Geotextilien mit definierter Isotropie, dadurch gekennzeichnet, dass die Filamente gegebenenfalls nach Aufspreizen durch einen Separator auf strukturierte Leit- oder Prallbleche auftreffen und entsprechend der Struktur dieser Leit- oder Prallbleche definiert abgelegt werden, worauf sie verfestigt werden.A process for the production of geotextiles with a defined isotropy, characterized in that the filaments, if appropriate after spreading through a separator, hit structured guide or baffle plates and are deposited in a defined manner according to the structure of these guide or baffle plates, whereupon they are solidified. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Verfestigung durch eine Wasserstrahlverfestigung erfolgt.A method according to claim 3, characterized in that the consolidation is carried out by water jet consolidation.
    EP02026430A 2002-11-27 2002-11-27 Structured deflector for laying filaments Withdrawn EP1424420A1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    EP02026430A EP1424420A1 (en) 2002-11-27 2002-11-27 Structured deflector for laying filaments

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP02026430A EP1424420A1 (en) 2002-11-27 2002-11-27 Structured deflector for laying filaments

    Publications (1)

    Publication Number Publication Date
    EP1424420A1 true EP1424420A1 (en) 2004-06-02

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    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN104846556A (en) * 2014-02-17 2015-08-19 赖芬豪泽机械工厂有限及两合有限公司 Apparatus for continuous production of spunbonded nonwoven webs

    Citations (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR1580328A (en) * 1968-06-04 1969-09-05
    FR2117812A1 (en) * 1970-12-11 1972-07-28 Rhodiaceta Filament deflector - for prodn of continuous filament non-woven webs
    DE2300331A1 (en) * 1972-01-04 1973-08-02 Rhone Poulenc Textile DEVICE FOR THE PRODUCTION OF NON-WOVEN NON-WOVEN FABRICS FROM ENDLESS SINGLE THREADS
    FR2295153A1 (en) * 1974-12-21 1976-07-16 Hoechst Ag METHOD AND DEVICE FOR MANUFACTURING NON-WOVEN FILAMENT TAPES
    FR2384880A1 (en) * 1977-03-25 1978-10-20 Hoechst Ag METHOD AND APPARATUS FOR MANUFACTURING NON-FABRICS
    US4380104A (en) * 1980-01-18 1983-04-19 Seiichi Kamioka Apparatus for separating the filament bundle of fibrous material
    DE3807483A1 (en) * 1987-05-05 1988-11-17 Karl Marx Stadt Tech Textil Device for uniform laying down of the filaments in the manufacture of a bonded fabric using the direct method
    US4833758A (en) * 1982-03-18 1989-05-30 Toray Industries, Inc. Apparatus for preparing a nonwoven web
    AT399169B (en) * 1993-08-19 1995-03-27 Polyfelt Gmbh METHOD FOR CONTROLLING THE ANISOTROPY OF SPINNING FLEECE

    Patent Citations (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR1580328A (en) * 1968-06-04 1969-09-05
    FR2117812A1 (en) * 1970-12-11 1972-07-28 Rhodiaceta Filament deflector - for prodn of continuous filament non-woven webs
    DE2300331A1 (en) * 1972-01-04 1973-08-02 Rhone Poulenc Textile DEVICE FOR THE PRODUCTION OF NON-WOVEN NON-WOVEN FABRICS FROM ENDLESS SINGLE THREADS
    FR2295153A1 (en) * 1974-12-21 1976-07-16 Hoechst Ag METHOD AND DEVICE FOR MANUFACTURING NON-WOVEN FILAMENT TAPES
    FR2384880A1 (en) * 1977-03-25 1978-10-20 Hoechst Ag METHOD AND APPARATUS FOR MANUFACTURING NON-FABRICS
    US4380104A (en) * 1980-01-18 1983-04-19 Seiichi Kamioka Apparatus for separating the filament bundle of fibrous material
    US4833758A (en) * 1982-03-18 1989-05-30 Toray Industries, Inc. Apparatus for preparing a nonwoven web
    DE3807483A1 (en) * 1987-05-05 1988-11-17 Karl Marx Stadt Tech Textil Device for uniform laying down of the filaments in the manufacture of a bonded fabric using the direct method
    AT399169B (en) * 1993-08-19 1995-03-27 Polyfelt Gmbh METHOD FOR CONTROLLING THE ANISOTROPY OF SPINNING FLEECE

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN104846556A (en) * 2014-02-17 2015-08-19 赖芬豪泽机械工厂有限及两合有限公司 Apparatus for continuous production of spunbonded nonwoven webs
    EP2907909A1 (en) * 2014-02-17 2015-08-19 Reifenhäuser GmbH & Co. KG Maschinenfabrik Assembly for the continuous production of a woven material
    US9951448B2 (en) 2014-02-17 2018-04-24 Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik Apparatus for the continuous manufacture of a spunbond web
    CN104846556B (en) * 2014-02-17 2019-04-12 赖芬豪泽机械工厂有限及两合有限公司 Apparatus for continuous production of spunbonded nonwoven webs

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